We don't yet know what consequences in economy, ideology, politics, war, this event will have, but one thing is sure: the US, which, till now, perceived itself as an island exempted from this kind of violence, witnessing this kind of things only from the safe distance of the TV screen, is now directly involved. So the alternative is: will Americans decide to fortify further their "sphere," or to risk stepping out of it? Either America will persist in, strengthen even, the deeply immoral attitude of "Why should this happen to us? Things like this don't happen HERE!", leading to more aggressivity towards the threatening Outside, in short: to a paranoiac acting out. Or America will finally risk stepping through the fantasmatic screen separating it from the Outside World, accepting its arrival into the Real world, making the long-overdued move from "A thing like this should not happen HERE!" to "A thing like this should not happen ANYWHERE!". Therein resides the true lesson of the bombings: the only way to ensure that it will not happen HERE again is to prevent it going on ANYWHERE ELSE. In short, America should learn to humbly accept its own vulnerability as part of this world, enacting the punishment of those responsible as a sad duty, not as an exhilarating retaliation.